public class 输入 {
        static class Read {
            StreamTokenizer st = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
            public int nextInt() throws Exception {
                st.nextToken();//读取数据
                return (int)st.nval;//默认存储的是double类型
            }
            public String readLine() throws Exception {//有局限，慎用
                st.nextToken();
                return st.sval;
            }
        }
        public static void main(String[] args) throws Exception {
            //3.快读2(用的不多)
            Read read = new Read();
            int n = read.nextInt();
            System.out.print(n);

            //1.最常见的输入
//		Scanner scan = new Scanner(System.in);
//		int n = scan.nextInt();
//		int m = scan.nextInt();
//		System.out.print(n+" "+m);

            //2.快读1(数据多时用)
//		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
//		String[] strings = br.readLine().split(" ");
//		int n = Integer.parseInt(strings[0]);
//		int m = Integer.parseInt(strings[1]);
//		System.out.print(n+" "+m);


        }
    }

